package com.zzw.hotspot;

import javax.management.MBeanServerConnection;
import javax.management.ObjectInstance;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;
import java.lang.management.MemoryUsage;
import java.text.SimpleDateFormat;
import java.util.*;

public class JmxTest {

    private static Formatter format = new Formatter();
    public static void main(String[] args) {
        try {

            String jmxURL = "service:jmx:rmi:///jndi/rmi://192.168.220.131:8888/jmxrmi";

            JMXServiceURL serviceURL = new JMXServiceURL(jmxURL);

            Map<String, String[]> map = new HashMap<String, String[]>();
           /* String[] credentials = new String[] { "monitorRole", "tomcat" };
            map.put("jmx.remote.credentials", credentials);*/
            // JMXConnector connector = JMXConnectorFactory.connect(serviceURL,
            // map);
            JMXConnector connector = JMXConnectorFactory.connect(serviceURL, null);

            MBeanServerConnection mbsc = connector.getMBeanServerConnection();

            // 端口最好是动态取得
            ObjectName grpObjName = new ObjectName("Catalina:type=GlobalRequestProcessor,*");
            Set<ObjectName> grps = mbsc.queryNames(grpObjName, null);
            for (ObjectName obj : grps) {
                System.out.println("名称:" + obj.getKeyProperty("name"));
                ObjectName objname = new ObjectName(obj.getCanonicalName());
                System.out.println("bytesReceived:" + mbsc.getAttribute(objname, "bytesReceived"));
                System.out.println("bytesSent:" + mbsc.getAttribute(objname, "bytesSent"));
                System.out.println("requestCount:" + mbsc.getAttribute(objname, "requestCount"));
            }

            ObjectName threadObjName = new ObjectName("Catalina:type=ThreadPool,name=\"*http*\"");
            Set<ObjectName> smbi = mbsc.queryNames(threadObjName, null);
            for (ObjectName obj : smbi) {
                System.out.println("端口名:" + obj.getKeyProperty("name"));
                ObjectName objname = new ObjectName(obj.getCanonicalName());
                System.out.println("最大线程数:" + mbsc.getAttribute(objname, "maxThreads"));
                System.out.println("当前线程数:" + mbsc.getAttribute(objname, "currentThreadCount"));
                System.out.println("繁忙线程数:" + mbsc.getAttribute(objname, "currentThreadsBusy"));
            }

            // ObjectName threadObjName1 = new
            // ObjectName("Catalina:type=ThreadPool,name=\"http-apr-8080\"");
            // MBeanInfo mbInfo = mbsc.getMBeanInfo(threadObjName1);
            //
            // String attrName = "currentThreadCount";// tomcat的线程数对应的属性值
            // MBeanAttributeInfo[] mbAttributes = mbInfo.getAttributes();
            // System.out.println("currentThreadCount:" +
            // mbsc.getAttribute(threadObjName1, attrName));

            // heap
            for (int j = 0; j < mbsc.getDomains().length; j++) {
                System.out.println("###########" + mbsc.getDomains()[j]);
            }

            Set<?> MBeanset = mbsc.queryMBeans(null, null);
            System.out.println("MBeanset.size() : " + MBeanset.size());
            Iterator<?> MBeansetIterator = MBeanset.iterator();
            while (MBeansetIterator.hasNext()) {
                ObjectInstance objectInstance = (ObjectInstance) MBeansetIterator.next();
                ObjectName objectName = objectInstance.getObjectName();
                String canonicalName = objectName.getCanonicalName();
                System.out.println("canonicalName : " + canonicalName);
                if (canonicalName.equals("Catalina:host=localhost,type=Cluster")) {
                    // Get details of cluster MBeans
                    System.out.println("Cluster MBeans Details:");
                    System.out.println("=========================================");
                    // getMBeansDetails(canonicalName);
                    String canonicalKeyPropList = objectName.getCanonicalKeyPropertyListString();
                    System.out.println(canonicalKeyPropList);
                }
            }
            // ------------------------ system ----------------------
            ObjectName runtimeObjName = new ObjectName("java.lang:type=Runtime");
            System.out.println("厂商:" + (String) mbsc.getAttribute(runtimeObjName, "VmVendor"));
            System.out.println("程序:" + (String) mbsc.getAttribute(runtimeObjName, "VmName"));
            System.out.println("版本:" + (String) mbsc.getAttribute(runtimeObjName, "VmVersion"));
            Date starttime = new Date((Long) mbsc.getAttribute(runtimeObjName, "StartTime"));
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            System.out.println("启动时间:" + df.format(starttime));

            Long timespan = (Long) mbsc.getAttribute(runtimeObjName, "Uptime");
            System.out.println("连续工作时间:" + JmxTest.formatTimeSpan(timespan));

            // ----------------------- JVM -------------------------
            // 堆使用率
            ObjectName heapObjName = new ObjectName("java.lang:type=Memory");
            MemoryUsage heapMemoryUsage = MemoryUsage
                    .from((CompositeDataSupport) mbsc.getAttribute(heapObjName, "HeapMemoryUsage"));
            long maxMemory = heapMemoryUsage.getMax();// 堆最大
            System.out.println("heap size:" + maxMemory);
            long commitMemory = heapMemoryUsage.getCommitted();// 堆当前分配
            long usedMemory = heapMemoryUsage.getUsed();
            System.out.println("heap:" + (double) usedMemory * 100 / commitMemory + "%");// 堆使用率

            MemoryUsage nonheapMemoryUsage = MemoryUsage
                    .from((CompositeDataSupport) mbsc.getAttribute(heapObjName, "NonHeapMemoryUsage"));
            long noncommitMemory = nonheapMemoryUsage.getCommitted();
            long nonusedMemory = heapMemoryUsage.getUsed();
            System.out.println("nonheap:" + (double) nonusedMemory * 100 / noncommitMemory + "%");

            ObjectName permObjName = new ObjectName("java.lang:type=MemoryPool,name=*Perm*Gen*");
            Set<ObjectName> sperm = mbsc.queryNames(permObjName, null);
            for (ObjectName obj : sperm) {
                ObjectName objname = new ObjectName(obj.getCanonicalName());
                MemoryUsage permGenUsage = MemoryUsage.from((CompositeDataSupport) mbsc.getAttribute(objname, "Usage"));
                long committed = permGenUsage.getCommitted();// 持久堆大小
                long used = heapMemoryUsage.getUsed();//
                System.out.println("perm gen:" + (double) used * 100 / committed + "%");// 持久堆使用率
            }

            // ------------------- Session ---------------
            ObjectName managerObjName = new ObjectName("Catalina:type=Manager,*");
            Set<ObjectName> s = mbsc.queryNames(managerObjName, null);
            for (ObjectName obj : s) {
                System.out.println("应用名:" + obj.getKeyProperty("path"));
                ObjectName objname = new ObjectName(obj.getCanonicalName());
                System.out.println("最大会话数:" + mbsc.getAttribute(objname, "maxActiveSessions"));
                System.out.println("会话数:" + mbsc.getAttribute(objname, "activeSessions"));
                System.out.println("活动会话数:" + mbsc.getAttribute(objname, "sessionCounter"));
            }

            // ---------------- Thread Pool ----------------
            ObjectName threadpoolObjName = new ObjectName("Catalina:type=ThreadPool,*");
            Set<ObjectName> s2 = mbsc.queryNames(threadpoolObjName, null);
            for (ObjectName obj : s2) {
                System.out.println("端口名:" + obj.getKeyProperty("name"));
                ObjectName objname = new ObjectName(obj.getCanonicalName());
                System.out.println("最大线程数:" + mbsc.getAttribute(objname, "maxThreads"));
                System.out.println("当前线程数:" + mbsc.getAttribute(objname, "currentThreadCount"));
                System.out.println("繁忙线程数:" + mbsc.getAttribute(objname, "currentThreadsBusy"));
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static String formatTimeSpan(long span) {
        long minseconds = span % 1000;

        span = span / 1000;
        long seconds = span % 60;

        span = span / 60;
        long mins = span % 60;

        span = span / 60;
        long hours = span % 24;

        span = span / 24;
        long days = span;
        return format.format("%1$d天 %2$02d:%3$02d:%4$02d.%5$03d", days, hours, mins, seconds, minseconds).toString();
    }
}
